It’s an easy one this time (Again late 70s early 80s)
There was a famous American organist that was known for playing a particular instrument, however for a short time the organist changed to another manufactures instrument with the manufacture making changes to the instrument to suit the organists playing style. (And which was also made available for all users of said instrument)
Questions:
1. What was the organist name?
2. What was the make and model of the original instrument?
3. What was the make and model of the new instrument?
4. What was the modification to the instrument?
Happy thinking
Bill